Control device for an automatic transmission

A driving force control device, which controls a driving force by changing a gear ratio of an automatic transmission, comprises: a virtual throttle opening converter (123a) for converting a target driving force into a virtual throttle opening by using a target driving force characteristic and a detected vehicle speed; a throttle opening information selector (123b) for selecting the virtual throttle opening from the virtual throttle opening converter as throttle opening information when the driving force is controlled, and selecting an actual throttle opening from the throttle opening sensor as throttle opening information when the driving force is not controlled; and a target input revolutionary speed calculator (123d) that calculates the target input revolutionary speed according to the selected throttle opening information, the detected vehicle speed and one shift map (123c). The Continuously variable transmission determines an achievable gear ratio according to the target input revolutionary speed.